June 02, 2023
Tips for Diagnosing a Ford 6F35 with Codes P073D or P177F
Jim Mobley
Symptoms:
- 3-4 Flare
- Burnt Low/Reverse clutch
- OD clutch burned
- 4-5-6 Slip
- Delayed Reverse
- 4th Slip
Cause:
Valve bore wear results in loss of apply oil, sluggish valve movement and sticking valves causing shift complaints and clutch distress.Correction:
Restore the correct valve/bore clearances and clutch control by reconditioning the bore and installing Sonnax oversized low reverse/overdrive (4-5-6) clutch regulator valve kit.6F35 (Gen. 1), 6F35 (Gen. 2), 6F35 (Gen. 3)
Oversized Low Reverse/Overdrive (4-5-6) Clutch Regulator Valve Kit
Part No. 144740-43K
-
Tooling:
- F-144740-TL43
- VB-FIX
You need this if... View Instructions Find a Distributor
Wear can occur in Gen. 1, Gen. 2 and Gen. 3 Ford 6F35 clutch control valve bores. This wear allows critical clutch apply pressure and oil loss which can cause shifting issues and a burnt clutch. Reconditioning the bore and installing Sonnax oversized low reverse/overdrive (4-5-6) clutch regulator valve kit 144740-43K restores correct pressure regulation.
- New spring matches OE calibration
- Hardcoat anodized aluminum valve combats premature wear
- Annular grooves help center valve in bore to reduce future side-load wear
- O-Ringed end plug provides positive sealing
- Spring
- Valve
- End Plug
- O-Rings (2) 1 Extra
You need this if...
Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.
